Save Animation/ Advanced/ Key value pair needs it's own group
In the Save Animation, Advanced, Key value pair section, this section needs it's own group. The reason is it needs to have a header that explains what it is. I would recommend "Metadata" or "PNG metadata" or "Metadata key/value pairs" or something.
I would also really like a writeup on this feature, explaining how it is used. I looked everywhere I could think of, and no hint how to use it. Discourse, or users manual documentation would be ideas.